Convert Shapefile to TopoJSON

Convert Shapefile (.shp, .dbf, .shx, .prj) to TopoJSON (.topojson, .json) online for free. Fast, accurate geospatial format conversion with CRS reprojection.

Ready to convert?

Upload your Shapefile file and get TopoJSON output in seconds.

About Shapefile

The ESRI Shapefile is one of the most widely used geospatial vector data formats. It stores geometry and attribute data in multiple component files (.shp, .dbf, .shx, .prj).

Extensions: .shp, .dbf, .shx, .prj
Software: ArcGIS, QGIS, MapInfo, AutoCAD Map 3D, Global Mapper
Limitations: Field names limited to 10 characters. 2 GB file size limit. Single geometry type per file. No support for date-time fields.

About TopoJSON

TopoJSON is an extension of GeoJSON that encodes topology, eliminating redundancy and reducing file size. Shared boundaries between features are stored only once.

Extensions: .topojson, .json
Software: D3.js, Mapbox, QGIS, GDAL/OGR, Leaflet
Limitations: Read-only in most GIS software. Requires conversion for editing. Less widely supported than GeoJSON.

How to Convert Shapefile to TopoJSON

  • Upload your Shapefile file (.shp, .dbf, .shx, .prj)
  • Review detected layers, features, and coordinate system
  • Select TopoJSON as your output format
  • Choose a target coordinate reference system (optional)
  • Click Convert and download your TopoJSON file

Frequently Asked Questions

How do I convert Shapefile to TopoJSON?

Upload your Shapefile file to ConvertGeoData, review the detected data, select TopoJSON as the output format, and click Convert. Your converted file will be ready to download in seconds.

Is the Shapefile to TopoJSON conversion free?

Yes! ConvertGeoData offers free conversions for all users. No account required for basic conversions. Sign up for a Pro or Business plan for higher limits.

Can I change the coordinate system during conversion?

Yes. ConvertGeoData automatically detects your source CRS and lets you reproject to any EPSG coordinate reference system during conversion.

What software can open TopoJSON files?

TopoJSON files can be opened with D3.js, Mapbox, QGIS, GDAL/OGR and more.

Convert Shapefile to TopoJSON Now

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